The delivery date applies to the inventory items purchased by 5pm EST on business days. If your requested quantity exceeds the inventory, it will be dispatched from FS Asia warehouse with Global Shipping Program (GSP). There may be a delay to your delivery service due to COVID-19 and increased volume. For more tracking details, please refer to My Account.

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Warranty & Returns

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If items don't work as expected, FS warranty may allow the items to be returned, exchanged, or repaired.

We offer a 30-day return & refund and exchange service for most in-stock items. And within the warranty period, we still offer free repair services.

For consumables, there is no warranty period and free repair services. If there are any quality issues after delivery, please feel free to contact us. We will handle it promptly. View Return Policy and Warranty page for more details.

Free Technical Support

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FS is committed to becoming the trusted partners of our clients, and offering a full portfolio of digital infrastructure products and a comprehensive one-stop digital solution.

You can Request Technical Support to get timely help for any questions about the items or a free connectivity solution design.

Please Note:* FEC in host is required to be turned on to increase the reliability of transmission.

Quality Certifications

This product provides the lifetime warranty, which aims to reflect our greatest sincerity. Please contact us to learn more.

This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.

This product meets applicable RoHS requirements. The RoHS directive restricts the use of ten hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.

REACH is a regulation of the European Union, adopted to improve the protection of human health and the environment through the better and earlier identification of the intrinsic properties of chemical substances. Please contact us to learn more.

This product was produced under the requirements of CE to indicate conformity with the essential health and safety. Please contact us to learn more.

This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.

FDA is responsible for regulating radiation-emitting electronic products. To protect the public from hazardous and unnecessary exposure to radiation from electronic products. Please contact us to learn more.

This product is RCM compliant, which indicates compliance with electrical safety, EMC, EME and telecommunications legislative requirements. Please contact us to learn more.

This product fully accords with the WEEE, which is an environmental regulation of the European Union and aims to enhance the improvement of collection, treatment and recycling of products at the end of their life. Please contact us to learn more.

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

13 reviews

I was looking for a Cisco 25G fiber module that would work in a Cisco 9500 switch. FS AM did a detailed work for our request. He asked about our device model, it was a Cisco 9500-24y4c one. And he told me that their testing center had this Cisco switch, he could apply for a compatibility test report. I really appreciated his kind and professional action, and quickly I received the testing report. Then I bought the module at FS. The product was shopped in a protective box as the man promised, and there was no damage. Plugged the module on my device, its RX and TX power were within spec.

FS guys recommended the 25G module with 10km transmission for our 7km link. They helped me calculated the optical loss to ensure good performance. I had good communication with them, and glad to get a quality product.

I bought 10G transceivers from FS before and they satisfied my needs very well. This time due to the network upgrading, I needed some 25G transceivers to work with my Cisco 9300 switch. In view of the last pleasant using experience, I chose FS SFP28 transceivers again. Fast delivery and careful package as always. And they have been working smoothly on my switch so far.

I tried a Finisar 25Gbps-LR SFP to work with my Cisco Catalyst 9300 and got the error message when plugging it to the switch. Later, incidentally found this SFP28 transceiver. The product description said it was compatible with several other Cisco switches. Consulted the AM and she said this transceiver could match my Cisco switch. Placed order and received it so fast. I couldn’t wait to try it on my switch. Aha! No error reported and they have been matching perfectly.

I can plug into SFP28 and SFP+ ports, both of can work fine, but different data rates. With SFP28, our web-scale and cloud organizations can enjoy 2.5 times the network bandwidth performance of 10GbE, and reduced the reduction of facility costs related to space, power and cooling. Cheers!

We've been using FS 25G SFP28 LR for a while now, and each time I am pleased with the experience. No hassle, and much cheaper than the original brand . We will continue to use these products and would recommend them to everyone